Bonjour a tous pouvez vous m'aider svp merci beaucoup Exercice 3 :


Sur la figure ci-contre on donne :
AF = 13 cm
FE = 5 cm
AB = 7 cm
DC = 17,68 cm
(CBA) ̂=74°
(BCD) ̂ = 66°


Calculer AC.

Calculer BC.

Le triangle BCD est-il rectangle ?

Calculer (ACB) ̂

Calculer (CBD) ̂

svp aider moi merci
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